ITSC 1213
The file extension of a Java source code file is?
.class
What javadoc tag is used to specify the writer of the class source code?
@author
Where do you type javadoc comments?
Above each method heading
A reference variable will hold a(n)?
Address
The name of your source code file must?
Be the exact same as the public class in the file
What is the name of the IDE we are using in lecture and lab?
BlueJ
A java project is a collection of?
Classes
Which method is used to build an object?
Constructor Method
What java operator allows you to access public methods?
Dot operator
The term for declaring the fields of a class and methods that change the values of these fields is in one class definition file is?
Encapsulation
A class is an object?
False
Fields and variables are the same thing?
False
In a class definition file, each method must have a different name?
False
Java is a compiled language and the compiler produces an executable?
False
More than one reference variable can hold the address of an object?
False
Once an object is created, the fields should not change their values?
False
Once an object is created, you can call the constructor method again to change the value of the fields?
False
You can only create one instance of a class?
False
What keyword is used to declare a constant field?
Final
What must you include in the subject line of all emails to Lehmann?
ITSC 1213 - 001
Ternary Operator minVal = (a < b) ? a : b;
If a is less than b, minVal is a, else minVal is b
Where does execution of a Java application start?
In public static void main in a public class
The debugger helps you locate what type of error?
Local errors
In order to use the BlueJ debugger, your code?
Must have no syntax errors
Another name for a set() method is a?
Mutator Method
What operator is used to create object from class definitions?
New
What is the return type of the constructor method of a class?
No return type is allowed
If your method is reading input from one input stream only, how many Scanner objects are needed?
Only one
When the address of an object is not stored in any reference variable, that object is known as a(n)?
Orphan
Where are all fields declared?
Outside of any method
The two categories of data types in Java are?
Primitive and Reference
What class is pre-written and used to read input?
Scanner
By convention, all class names?
Start with an uppercase letter, and then use camel notation
Which debugger command allows you to go into the code at a method call?
Step into
What built in class is used to manage sequences of characters?
String
Which of the following is not a Java primitive data type?
String
What built in class is used to manipulate and change sequences of characters?
StringBuilder
What parameter do you send to the constructor of the Scanner class to indicate you will use keyboard input?
System.in
A class is a?
Template
What are the javadoc comments used for?
To provide inline comments
What is the purpose of the toString() method?
To return a textual representation of the state of an object
A Java symbolic constant must be assigned a value when it is declared?
True
Both fields and local variables can be declared as final?
True
Every object must have a name?
True
Fields are usually given private access?
True
If you do not write a constructor method, Java provides one for you?
True
To use the debugger in BlueJ, your class file must be compiled?
True
What does immutable mean?
Unchangeable
What is the return data type of the String class equals() Method?
boolean
What is the return type of the String class compareTo() Method?
int
